CN219410928U - Prefabricated pier connection structure of assembling - Google Patents
Prefabricated pier connection structure of assembling Download PDFInfo
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- CN219410928U CN219410928U CN202320714071.2U CN202320714071U CN219410928U CN 219410928 U CN219410928 U CN 219410928U CN 202320714071 U CN202320714071 U CN 202320714071U CN 219410928 U CN219410928 U CN 219410928U
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- pier
- steel pipe
- damper
- damping unit
- buckling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The utility model discloses a prefabricated spliced pier connecting structure which comprises a pier, a bearing platform, an outer-covered steel pipe and a replaceable damping unit, wherein the outer-covered steel pipe and the replaceable damping unit are arranged between the pier and the bearing platform, the replaceable damping unit is arranged on the outer side of the outer-covered steel pipe, and the outer-covered steel pipe and the replaceable damping unit are fixedly connected with the bearing platform and the pier respectively. The utility model adopts the prefabricated assembly pier connecting structure, has safe and reliable structure, can ensure the effective connection between the bottom of the prefabricated assembly pier and the bearing platform, simultaneously obviously improves the energy consumption capability of the prefabricated assembly pier under the action of earthquake, better protects the pier main body in the earthquake, and ensures that the pier is not subjected to larger plastic damage; the replaceable damping unit enables the damper to be replaced after the bridge pier is subjected to an earthquake to be continuously put into use, and is beneficial to rescue and repair after the bridge pier is assembled.
Description
Technical Field
The utility model discloses a prefabricated spliced pier connecting structure, and belongs to the technical field of bridge engineering.
Background
The existing bridge structure generally adopts a construction method of cast-in-place concrete, and the construction method has the problems of long on-site maintenance period, large on-site workload, easy traffic jam and the like. With the advancement of urban traffic and construction of cross-sea bridges, the demand for rapid construction of bridges in limited sites is gradually increasing. The prefabrication splicing technique is a viable means to solve the above-mentioned problems.
The prestressed tendons in the prefabricated spliced pier greatly increase the integrity and self-resetting capability of the pier, but all the sections of steel bars in the spliced pier are not communicated, the lateral resistance is mainly provided by the tensile force of the prestressed tendons and the compressive resistance of concrete, and the steel bars in the concrete are less involved in working, so that the earthquake resistance of the spliced pier is reduced. And shearing sliding is easy to occur between the joint positions of the spliced piers under horizontal load or displacement.
At present, energy-consuming steel bars are generally buried at splicing joints, energy consumption is carried out by yielding the energy-consuming steel bars, the energy-consuming steel bars are arranged in concrete, replacement cannot be carried out after yielding, and repair is difficult after earthquake damage.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides a prefabricated assembly pier connecting structure which comprises a pier, a bearing platform and a replaceable damping unit;
the replaceable damping unit is arranged between the bridge pier and the bearing platform and is fixedly connected with the bearing platform and the bridge pier respectively.
Preferably, the steel pipe is wrapped outside;
the outer wrapping steel pipe is arranged between the bridge pier and the bearing platform;
the replaceable damping unit is arranged on the outer side of the outer-covered steel pipe.
Preferably, the replaceable damping unit comprises two groups of energy dissipation devices, and the two groups of energy dissipation devices are respectively arranged on two opposite sides of the outer-covered steel pipe.
Preferably, the energy consumption device comprises two buckling-preventing clamping plates and a damper;
the damper is arranged between the two buckling-restrained splints;
and the two buckling-preventing clamping plates are fixedly connected and clamp the damper.
Preferably, the energy consumption device further comprises two limiting plates;
the two limiting plates are arranged on two opposite sides of the damper, are arranged around the damper in a surrounding mode with the two buckling-preventing clamping plates, and are fixedly connected with the buckling-preventing clamping plates.
Preferably, the energy dissipation device further comprises a stiffening plate;
the stiffening plate is arranged at the joint of the buckling-preventing clamping plate and the lower connecting plate of the damper.
Preferably, the bridge pier connecting structure further comprises a steel backing plate;
the steel backing plate is arranged between the replaceable damping unit and the bearing platform.
Preferably, a plurality of steel nails are arranged on the inner wall of the outer-wrapping steel pipe, and one ends of the steel nails are fixedly connected with the inner wall of the outer-wrapping steel pipe.
Preferably, the surface of the outer-covered steel pipe is covered with an anti-corrosion coating.
Preferably, the materials of the outer wrapping steel pipe and the buckling restrained clamping plate are Q235 steel.
The beneficial effects are that: the utility model adopts the prefabricated assembly pier connecting structure, has safe and reliable structure, can ensure the effective connection between the bottom of the prefabricated assembly pier and the bearing platform, simultaneously obviously improves the energy consumption capability of the prefabricated assembly pier under the action of earthquake, better protects the pier main body in the earthquake, and ensures that the pier is not subjected to larger plastic damage; the replaceable damping unit is arranged, so that the damper can be replaced after the bridge pier is subjected to an earthquake, and the bridge pier can be continuously put into use, so that the bridge pier is favorably assembled for rescue and repair after the earthquake.
Drawings
FIG. 1 is a schematic view of a prefabricated assembled connection structure according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a prefabricated assembled connection structure according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a damper and a limiting plate in the present embodiment;
fig. 4 is a schematic view of the replaceable damping unit in this embodiment.
In the figure: 1. wrapping the steel pipe; 2. a replaceable damping unit; 2.1, a damper; 2.2, connecting plates on the dampers; 2.3, a lower connecting plate of the damper; 2.4, buckling-restrained splints; 2.5, limiting plates; 2.6, stiffening plates; 3. bearing platform; 4. a steel backing plate; 5. reserving reinforcing steel bars; 6. and (5) steel nails.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems and devices are omitted so as not to obscure the description of the present utility model with unnecessary detail.
The preferred technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
As shown in FIG. 1, the prefabricated pier connecting structure comprises a pier, a bearing platform 3, an outer wrapping steel pipe 1 and a replaceable damping unit 2, wherein the outer wrapping steel pipe 1 and the replaceable damping unit 2 are arranged between the pier and the bearing platform 3, the replaceable damping unit 2 is arranged outside the outer wrapping steel pipe 1, the outer wrapping steel pipe 1 and the replaceable damping unit 2 are fixedly connected with the bearing platform 3 and the pier respectively, and concrete is filled in the outer wrapping steel pipe 1. The replaceable damping unit 2 and the outer-covered steel pipe 1 in the connection form effectively improve the connection strength of the replaceable damping unit 2 and the pier, simultaneously remarkably improve the energy consumption capability of the prefabricated assembly pier under the action of an earthquake, and better protect the pier main body in the earthquake so that the pier is not subjected to larger plastic damage; the replaceable damping unit 2 enables the damper 2.1 to be replaced after an earthquake, so that the bridge pier can be continuously put into use, and the post-earthquake rescue and repair of the spliced bridge pier are facilitated.
In this embodiment, the replaceable damping unit 2 may include two sets of energy consumption devices or four sets of energy consumption devices, and when two sets of energy consumption devices are provided, the two sets of energy consumption devices are respectively disposed on two opposite sides of the outer wrapping steel pipe 1; in the case of four groups of energy consumption devices, the four groups of energy consumption devices are arranged around the four sides of the outer-covered steel pipe 1. The structure using two sets of energy dissipation devices is shown in fig. 4, the energy dissipation devices comprise two buckling-preventing clamping plates 2.4, a damper 2.1 and two limiting plates 2.5, the damper 2.1 is arranged between the two buckling-preventing clamping plates 2.4, the two buckling-preventing clamping plates 2.4 are in fastening connection, and the damper 2.1 is clamped. The buckling-preventing clamping plates 2.4 can be connected by bolt fastening, riveting, bonding, bayonet fastening, welding and the like, and the utility model is not limited herein. In this embodiment, a bolt fastening connection mode is adopted, as shown in fig. 3, and when the bolts are fastened and connected, the bolts pass through holes on the limiting plate. Two limiting plates 2.5 are disposed on two opposite sides of the damper 2.1, and are surrounded by two buckling-preventing clamping plates 2.4 around the damper 2.1 and fixedly connected with the buckling-preventing clamping plates 2.4, in this embodiment, the buckling-preventing clamping plates 2.4 are made of Q235 steel or Q345 steel, and the Q235 steel has a low yield point, so that the Q235 steel is preferably used. The periphery of the damper 2.1 is provided with the buckling-restrained clamping plates 2.4 and the limiting plates 2.5, when the damper 2.1 consumes seismic energy through hysteresis deformation under the condition of a large earthquake, the buckling-restrained clamping plates 2.4 and the limiting plates 2.5 provide lateral constraint, the damper 2.1 is prevented from buckling deformation, damage or damage to the damper 2.1 is avoided or delayed, and the service life and safety performance of the damper 2.1 are effectively improved.
The joint of the buckling-restrained splint 2.4 and the damper 2.1 also comprises a stiffening plate 2.6; the stiffening plate 2.6 is arranged at the joint of the buckling-restrained splint 2.4 and the lower connecting plate 2.3 of the damper, the stiffening plate 2.6 is rectangular, trapezoidal or right-angled triangle and the like, and the right-angle sides of the stiffening plate 2.6 are respectively connected with the buckling-restrained splint 2.4 and the lower connecting plate 2.3 of the damper.
The bridge pier connecting structure further comprises a steel backing plate 4, and the steel backing plate 4 is arranged between the replaceable damping unit 2 and the bearing platform 3. The contact area between the replaceable damping unit 2 and the bearing platform 3 is enlarged by the steel base plate 4, so that tensile stress and fastening stress of the fastening nut can be better dispersed, local compression damage of the replaceable damping unit is prevented, and the safety performance of the replaceable damping unit 2 is improved.
The inner wall of the outer-covered steel pipe 1 is provided with a plurality of steel nails 6, and one end of each steel nail 6 is fixedly connected with the inner wall of the outer-covered steel pipe 1. In the prefabricated assembly pier connecting structure in the embodiment, the outer-covered steel pipe 1 is filled with concrete, as shown in fig. 2, steel nails 6 are arranged in the outer-covered steel pipe 1, the interaction between the concrete in the outer-covered steel pipe 1 and the outer-covered steel pipe 1 is enhanced, the concrete is transversely restrained by the hooping effect of the outer-covered steel pipe 1, and the ultimate compressive strain of the concrete is improved; the concrete provides lateral support for the outer-covered steel pipe 1, so that buckling of the outer-covered steel pipe 1 under the action of axial pressure and sinking of the outer-covered steel pipe 1 when impacted by vehicles and the like are avoided, and the axial bearing capacity is greater than that of the steel pipe or the concrete column with the same section. The outer-covered steel pipe 1 provides a construction template for concrete and stiffening steel bars used as the concrete, and avoids the template and the internal steel bars required by the construction of a concrete pier.
The material of the outer-covered steel pipe 1 can be Q235 steel or polyethylene composite steel pipe, and the like, specifically, the Q235 steel is selected in the embodiment, and the surface of the outer-covered steel pipe 1 is coated with an anti-corrosion coating, so that the applicability of the pier in a wet environment is improved, and the service life of the pier connecting structure is prolonged.
Specifically, the prefabricated spliced pier connecting device comprises the following steps: firstly, a steel backing plate 4 is arranged on a cast-in-situ bearing platform 3, and when the steel backing plate 4 is arranged, holes are formed in positions, corresponding to reserved steel bars 5, on the steel backing plate 4 and the bearing platform 3, so that the reserved steel bars 5 penetrate through the steel backing plate 4. The steel backing plate 4 is molded by the aid of the outer wrapping steel pipe 1, the cross section area of the outer wrapping steel pipe 1 is smaller than the contact area of the pier and the bearing platform 3, specifically, in the embodiment, the outer wall of the outer wrapping steel pipe 1 is close to the reserved steel bar 5 on the bearing platform 3, the outer wrapping steel pipe 1 is arranged at the middle position of the preset contact area of the pier and the bearing platform 3, a plurality of steel nails 6 are welded on the inner wall of the outer wrapping steel pipe 1, structural adhesive is coated on the inner wall of the outer wrapping steel pipe 1, then C50 high-strength concrete is poured into the outer wrapping steel pipe 1, and after the concrete is formed into strength, the steel backing plate 4 is fixedly connected with the bearing platform 3 through bolts.
Secondly, installing the replaceable damping units on two opposite sides of the outer-covered steel pipe 1, specifically, grooving and perforating on an upper connecting plate and a lower connecting plate of the damper 2.1 to enable the replaceable damping units to correspond to reserved steel bars 5 on the bearing platform 3 and reserved steel bars 5 on the bridge pier respectively, arranging limiting plates 2.5 on two sides of the damper 2.1, clamping the damper 2.1 and the limiting plates 2.5 between two buckling-restrained clamping plates, fastening the two buckling-restrained clamping plates through bolts, arranging stiffening plates 2.6 at joints of the buckling-restrained clamping plates and the lower connecting plate 2.3 of the damper, welding and connecting the stiffening plates 2.6 with the buckling-restrained clamping plates and the lower connecting plate 2.3 of the damper to form the replaceable damping units, installing the replaceable damping units on two opposite sides of the outer-covered steel pipe 1, reserving steel bars 5 on the bearing platform 3 to penetrate through holes of the lower connecting plate 2.3 of the damper, and connecting plate 2.3 to penetrate through the steel backing plate 4 to be connected with the bearing platform 3 through bolts.
The prefabricated spliced pier is arranged above an outer-covered steel pipe 1 above a bearing platform 3 of an integral hoisting device, reserved steel bars 5 on the pier penetrate through holes in a damper upper connecting plate 2.2, the damper upper connecting plate 2.2 is fixedly connected with the bottom of the pier through bolts, and after connection is completed, the reserved steel bars 5 on the bearing platform 3 and the reserved steel bars 5 at the bottom of the pier are welded with the outer wall of the outer-covered steel pipe 1 respectively. And (5) completing the connection of the prefabricated spliced piers.
The utility model adopts the prefabricated bridge pier connecting structure, has safe and reliable structure, can ensure the effective connection of the prefabricated bridge pier bottom and the bearing platform, simultaneously remarkably improves the energy consumption capability of the prefabricated bridge pier under the earthquake action, better protects the bridge pier main body in the earthquake, and ensures that the bridge pier is not subjected to larger plastic damage; the replaceable damping unit is arranged, so that the damper can be replaced after the bridge pier is subjected to an earthquake, and the bridge pier can be continuously put into use, so that the bridge pier is favorably assembled for rescue and repair after the earthquake.
The foregoing description is only a few examples of the present application and is not intended to limit the present application in any way, and although the present application is disclosed in the preferred examples, it is not intended to limit the present application, and any person skilled in the art may make some changes or modifications to the disclosed technology without departing from the scope of the technical solution of the present application, and the technical solution is equivalent to the equivalent embodiments.
Claims (9)
1. The prefabricated spliced pier connecting structure is characterized by comprising piers, bearing platforms, outer-covered steel pipes and replaceable damping units;
the outer-covered steel pipe and the replaceable damping unit are arranged between the bridge pier and the bearing platform;
the replaceable damping unit is arranged on the outer side of the outer-covered steel pipe;
and the outer-covered steel pipe and the replaceable damping unit are respectively and fixedly connected with the bearing platform and the pier.
2. The prefabricated assembled pier connection structure according to claim 1, wherein the replaceable damping unit comprises two groups of energy dissipation devices which are respectively arranged on two opposite sides of the outer-covered steel pipe.
3. The prefabricated assembled pier connecting structure according to claim 2, wherein the energy consumption device comprises two buckling-restrained splints and a damper;
the damper is arranged between the two buckling-restrained splints;
and the two buckling-preventing clamping plates are fixedly connected and clamp the damper.
4. The prefabricated spliced pier connection structure according to claim 3, wherein the energy consumption device further comprises two limiting plates;
the two limiting plates are arranged on two opposite sides of the damper, are arranged around the damper in a surrounding mode with the two buckling-preventing clamping plates, and are fixedly connected with the buckling-preventing clamping plates.
5. The prefabricated assembled pier connection structure according to claim 3, wherein the energy consuming device further comprises a stiffening plate;
the stiffening plate is arranged at the joint of the buckling-preventing clamping plate and the lower connecting plate of the damper.
6. The prefabricated spliced pier connection structure according to claim 1, wherein the pier connection structure further comprises a steel pad;
the steel backing plate is arranged between the replaceable damping unit and the bearing platform.
7. The prefabricated spliced pier connecting structure according to claim 1, wherein a plurality of steel nails are arranged on the inner wall of the outer-covered steel pipe, and one ends of the steel nails are fixedly connected with the inner wall of the outer-covered steel pipe.
8. The prefabricated assembled pier connecting structure according to claim 1, wherein the surface of the outer steel tube is covered with an anti-corrosive coating.
9. The prefabricated assembled pier connecting structure according to claim 3, wherein the outer steel tube and the buckling restrained splint are made of Q235 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320714071.2U CN219410928U (en) | 2023-04-04 | 2023-04-04 | Prefabricated pier connection structure of assembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320714071.2U CN219410928U (en) | 2023-04-04 | 2023-04-04 | Prefabricated pier connection structure of assembling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219410928U true CN219410928U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320714071.2U Active CN219410928U (en) | 2023-04-04 | 2023-04-04 | Prefabricated pier connection structure of assembling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219410928U (en) |
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2023
- 2023-04-04 CN CN202320714071.2U patent/CN219410928U/en active Active
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